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Discussion Starter · #1 ·
Probably one of the best tuning mods in terms of bang per buck. As the ST170 has a vvt head, the inlet cam pulley is left alone, so you only need to purchase one vernier pulley from the likes of Kent or Piper.

Now this is a mod that needs to be carried out at a proficient workshop as the car will need to be dyno tuned afterwards to optimise the exhaust cam for your car.
Nine times out of ten this will mean retarding the exhaust cam.

I had mine carried out at Power Engineernig, and I belive it was the first one in the UK done. Total cost (including FFOC labour discount) came to about ?200 for +10BHP.
Well happy
 
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